HAHA I have never thought about it before Hayess.
LAdy B there really isn't any clean up to it at all. Get yourself a double or queen size air mattress, they are usually rubber on one side of them and it works perfect. The gel when it does evaporate is completely gone. No trace of it on the pillows or the bed if you move over to it mid way during the session.
If anyone wants any info on it PM me or search for Nuru I have reviews and some posts on it.
Thanks,
Newfie